Friction clutch



Nov. 18, 1924- ,516,138

E. A. BEYL FRIICTION CLUTCH Filed Dec. 1, 19 2 2 Sheets-Sheet. l

Nov. 18, 1924- E. A. BEYL FRI CTION CLUTCH Filed Dec. 1, 1922 2Sheets-Sheet 2 JAG Patented Nov. 18,1924.

EMIL A. BEYL, or. MINNEAPOLIS, nirnnnso're.

FRICTION CLUTCH.

Application filed December 1, 1922. Serial no. 604,354,

To all whom it may cont-em: Be it known that I, EMIL zen of the UnitedStates, residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in FrictionTo the above end, the invention'consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to V the drawings Fig. 1 is a fragmentary view partly inelevation and partly in central section with the clutch arran ed totransmit power to the shaft to which it is applied;

Fig. 2 is a view partly in elevation and partly in section taken on theline 22 of Fig. 1; i

Fig. 3 is a detail view with some parts sectioned on the line 33 of Fig.2, on an enlarged scale;

Fig. 4 is an elevation of the clutch disc;

Fig. 5 is a View of the clutch disc with the friction plates securedthereto; and

Fig. 6 is a view corresponding to Fig, 1, showing a slight modification.

Referring first to the clutch as shown in Figs. 1 to 5, inclusive, thenumeral 7 indicates a shaft on which is loosely journaled the hub 8 of aspider 9 integrally formed with said hub at one end thereof, and whichspider carries an annular disc holder 10 through which said shaftextends axially.

Keyed to the shaft 7, at theopposite end of,

the hub 8 from the spider 9, is a collar 11 which holds said hub againstendwise movement from the clutch. A belt pulley 12 is keyed to the hub8. The opposite face of the disc holder 10 from the spider 9 is recessedto form an internal disc seat 13 having a polygonal outer stop surfaceor shoulder 14.

A, BEYL, a citi- Within the seat 13 is a disc 15-having a large axialopening, and which disc is free to' float axially within said seat, andits outer edge has the same contour as the shoulder "14: and closelyengages the same to lock said disc to the disc holder 10 for commonrotation therewith. The disc 15 is provided with a loose displaceablesegment 16 which, when removed, permits said disc to be applied to'theshaft 7 or removed there from without disassembling the clutch otherthan unscrewin the collar 23 to retract the flange 25 to a 0rd clearancebetween said. 1 kflange and disc holder 10 for the disc 15.

On each face of the disc 15 there is secured by rivets 17 a frictioncomposition of any suitable make, such" as used for brake linings, andis in the form of an endless sectional plate '18.

Interposed' between the spider 9 and disc 3 15 is a fixed annular flange19 integrally formed with the intermediateportion of a hub 20 secured tothe shaft 7 for rotation therewith by a key 21. One end of thehiib 2 Oengages'the spider 9' as a base of rei sistance for said flange-,'andthe other .end

of the hub 20 is provided with screw threads 22 to receive an internallyscrew-' threaded collar 23 having an annlilar groove or channel 24.Obviously, by turning the collar 23 on the screw threads 22, the samemay be adjusted. toward or from the fixed flange 19 for a. purpose thatwill presently appear. Loosely telescoped onto the hub 20 between thedisc 15 and collar 23 is a flange 25, of the same shape as the fixedflange 19,

and keyed at 26 to the hub 20 for rotation therewith but free to moveaxially on said hub toward and from the flange 19. 7 It may be herestated that the loose displaceable segment 16 is held against lateraldisplacement in respect to the disk by the flanges 19 and 25. v Formoving the flange 25 toward th flange 19-to clamp the disc 15 betweenthe flanges 19 and 25by the engagement of its friction surfaces 18 withsaid flanges and thereby set the clutch, there is provided a pairofdiametrically, opposite clutch dogs 27 and a shipper collar 28. Thesedogs 27 are in the form of short levers which-extend substantiallyparallel to theaxis of the shaft 7 and have on their inner ends fulcrumlugs 29 which project at ri ht angles thereto. and are mounted in the cannel 24 of the collar 23. Said inner ends of the dogs and hold theclutch set.

bores formed in the collar 23 the bot tom of its channel 2% to lock saidcollar against rotation on the hub 26. To prevent the cotter pin 33 frombeing accidentally lifted from the bore 34: into whichit projects, oneleg thereof is provided with a hump 35 arranged engage the respectivebolt 31 on theoppositeside thereof from the head of said cotter pin.

The outer ends oithe clutch dogs 27 are connected to the shipper collar23 by pairs of laterally spwid links 36.

These pairs oitlinks 36 embrace the clutch dogs 2? and lugs 37integrally formed with the shipper collar 28. Formed with the logs 3'Z'are stops 38 arranged to engage the collar 23, during the releasing ofthe clutch, to limit the movement of the shipper collar '28 toward-thecollar 23. The inner ends of the clutch dogs 27 are extended to formcounter-weights 39 which balance said clutch dogs. By reference to Fig.1 it will be noted that the links 36 are beyond dead centers and holdthe loose flange 25 inoperative. The engagement of the lugs 38 with thecollar 23 positively holds the respective ends of the links 36. I

By withdrawing the cotter pin 33 from the engaged hole 34, the collar 23may be rotated and thereby adjusted toward .or from the flange 19 tocause the clutch dogs 27 to set the movable flange 25 with a greater orless force to clamp the disc between said flanges. By drawing outward onthe shipper collar 28,:the links 36, acting on the clutch dogs 27, willcause said dogs to move; the flan e 25 toward the flange 19 and set theclutc and at. which time the links 36 will be beyond dead centers Aspreviously stated, the di sc 15, 'due to its displaceable sectior 16,may be removedirom the clutch simply by screwing the collar 23 outwardon the hub to give suficient clearance between the disc holder 10 andflange to remove said. disc.

Referring now to the clutch as shown in Fig. 6, the parts thereof whichcorrespond to like parts shown in Figs. 1 to 5 inclusive,

are indicated by the respective prime numbers. lln this form of theclutch, the seat. 13' 1s materially deeper than the seat'l3, and hasmounted therein two floating clutch discs 15 betweenwhich is interposeda plate 40 free to rotate within the disc holder 10 and secured forrotation with the hub 20' by a key All. While only two, clutch discsclutch, over 1,, W, '1. re aoove description it 1S 'v 1: m v v 1 1 v, Fthat too moved cnncn can so very 1 2.. 1 L J. M. amusteo to mice op wearr1 ,nges idand 25, which I referred to as clntc to grip the disc 15 witha a co simply by adjusting the co r 23. L wise, the disc 15 can beremoved and relined and (then replaced, or a new disc substituted for aworn out disc without disassembling the clutch,

The above described invention, has actual commercial usage proven himeflicient the purpose had in view.

l5 claim is:

l. in a friction clutch, the combination ly easily to cause :with ahub-equipped clutch member, of a second clutch member mounted on the hubwith freedom foraxial movement thereon, a power transmission elementhaving a friction disc intermediate of the two clutch. members, a collaroutward of the second clutch member and having screw-threaded engagementwith the hub, levers inlcrumed on the collar for action on the axiallymovable clutch member, said collar being free for rotation in respect tothe lovers, and provided with a plurality of circumferen tially spacedholes, "a lock pin arranged to be inserted into any one of said holes tolock the collar against rotation on the hub,

and means for operating the levers.

2. lln a friction clutch, the combination with a hub-equipped clutchmember, of a second clutch member mounted on the hub with freedom foraxial movement thereon,

a power transmission element having a trio- 1171011 (lISO ntermedlate ofthe two clutch members, a I collar having screw-threaded engagementwith-the hub, levers fulcrumed on the collar for action onthe axiallymovable clutch member, said collar being free for rotation in respect tothe lovers, means for operating the levers including a shipper collarand links. connecting the lovers thereto, and a stop for limiting themovement of the shipper collar toward the first noted collar to positionthe links beyond dead center when the clutch is released.

3. lln a friction clutch, the combination with a shattyot a clutchmember having a hub mounted on the shaft and secured for rotationtherewith, a second clutch member mounted on said hub with freedom foraxial movement in respect thereto, a power transmission element havingafriction disc in teimedlate of said twoclutch members,

collar having screw-threaded engagement with said hub, levers operativeon the axially movable clutch member and lBll release crumed on thecollar with freedom to permit axial adjustment of the collar on the hub,a shipper collar on the shaft, links connecting the levers to theshipper collar, said links being movable beyond dead center to causesaid levers to hold the axially movable clutch member either set orreleased, and a stop on the shippercollar arranged to engage saidaxially adjustable collar to limit the movements .of the links beyonddead centers when the axially movable clutch member is released.

4. In a. friction clutch, the combination with a shaft, of two clutchmembers held for rotation with the shaft, one of said clutch membersbeing free for axial movethe lever to the axially movable clutch member,a cotter pin for holding said bolt and arranged to extend into any oneof the bores in said collar to prevent rotatioi thereof, and means foroperating the lever to clamp the clutch members on the friction disc.

In testimony whereof I afiix my signature.

EMIL A. BEYL.

fulcrumed on the :collar, a bolt connecting

